generation.time {popbio} | R Documentation |
Calculates the generation time of a stage-classified matrix
generation.time(A, ...)
A |
projection matrix |
... |
additional items are passed to splitA
and are used to split A into T and F matrices |
see section 5.3.5 in Caswell (2001).
Generation time. If the transition matrix is singular, then NA is returned.
Previous versions required separate T and F matrices as input
Chris Stubben
Caswell, H. 2001. Matrix population models: construction, analysis, and interpretation, Second edition. Sinauer, Sunderland, Massachusetts, USA.
see fundamental.matrix
and net.reproductive.rate
for other age-specific traits
data(whale) generation.time(whale) ## fertilities in last column data(teasel) generation.time(teasel, r=1:6, c=6) ## Plot 3 from Calathea data(calathea) sapply(calathea[9:12], generation.time)